The story of teacher Carly "Crunk Bear" McKinney, who is "no longer employed" after a suspension for racy tweets, proved people can lose their jobs because of social-media posts. But that hasn't stopped Twitter users from playing with getting fired, as proven by Fire Me!, a site that sorts potentially career-ending tweets under four categories -- "Horrible Bosses," "Potential Killers," "Haters" and "Sexual Intercourse." See photo-illustrated examples from each, plus the tweets on the all-time leaderboard, and decide for yourself how long these people will be getting a paycheck.Horrible Bosses: